Binder-lock.



PATENTED MAY 14, 1907.

G. A. SHOEMAKERlv BINDER LOCK. APPLIoATIoN FILED-11m41.190s.

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UNITED sTATEs PATENT oEEIoE.

GEORGE A. SI-IOEMAKER, OF CHICAGO, ILLINOIS, ASSIGNOR TO BAKER- VAWTER COMPANY, OF PORTLAND, MAINE, A CORPORATION.

BINDER-LOCK.

Specification of Letters Patent.

Patented May 14, 1907.

Application filed December 21,1903. Serial No. 186,050.

To @ZZ whom, t may concern:

Be it known that I, GEORGE A. SHOE- MAKEE, a citizen of the United States, residing at Chicago, in Cook county and State of Illinois, have invented a new and useful Improvement in Binder-Locks, of which the following is a full and accurate description, reference being had to the accompanying drawings.

My invention relates especially to that class of binders in which economy of construction is desired, and resides in the peculiar mechanism herein described by which simplicity, strength and economy of manufacture is secured.

In the drawings, Figure l represents in perspective a binder fitted with my lock. Fig. 2 is an enlarged view of a vertical section taken through the line 2 2 of Fig. 1. Fig. 3 is a horizontal sectional view taken through the line 3 3 of Fig. 1. Fig. 4 is a detail drawing of the several parts of my locking mechanism.

More articularly, A and A represent the binding liars of my binder.

B, B represent the binding posts of my binder, which preferably consist of telescoping sections secured respectively to the bars A and A', but may be constructed of any desirable form or style or number. I prefer to construct them as follows: Projecting from the bar A is a stud b. In opposition thereto, and having telescopic relation therewith, a tube ZJ projects from the bar A and is fitted at its inner or free end with an inwardly turned rim or shoulder b2. Fitted in the u er or free end of the stud b is a screw b3, t e

ead of which is larger in diameter than the stud b, and is designed to engage with the rim or shoulder b2 as the sections b and b are drawn apart, thereby operating as a stop to prevent the separation of the sections b and b.

C C represent the locking posts of my binder, are identical in construction and may be one or more in number, as is desired. The construction of the locking post C may be described as follows: A tube c is permanently attached to the bar A', and projects toward the bar A. Attached to the bar A and projecting inwardly in opposition to the tube c is another and smaller tube c which is designed to telescope with said tube c. The inner or free end of the tube c is beveled as shown at cZ in Fig. 4; for the purposes hereinafter shown. Extending through the tube c is a shaft c3 sufficiently smaller than the tube c to allow a slight lateral movement of the shaft c3. This shaftis fitted. at its lower end with a head c4 and at its upper end with threads c5. The head c4 lies outside of the beveled end of the tube c; it is of the same shape and the same diameter as the outside surface pf the tube c. On one side it is beveled c to correspond with the beveled end cZ of the tube c. The'upper end c5 of the shaft c3 projects through a suitable aperture in the bar A and is here threaded. It is at this end c5 engaged by a thumb nut c7 which is larger in diameter than the aperture in the bar A through which the end c5 of the shaft projects. To prevent the thumb nut c7 from being removed from the end ofthe shaft c3 in operation, a small headed screw cs is countersunk into the nut c7 and screwed into the end c5 of the shaft c3.

The action of my locking post C in operation is as follows. The tubes c and c lying in telescopic engagement with each other, and the nut c7 turned as near to the end c5 of the shaft c3 as the screw cS will allow, the head c4 lies in the same perpendicular plane as the tube c and the tube c and thehead c4 will slide easily within the tube c. By tightening the nut c7 or turning it onto the shaft c3, the bar A acts as a shoulder for the nut c7 and the shaft c3 is drawn upward through the tube c. This operation causes the beveled face c6 of the head cf to slide in a lateral movement along the beveled end c2 of the tube c. This moves the head c4 out of the plane of the tube c and impinges the head c4 against the inner face of the tube c, thereby locking the post by frictional contact. A reversal of the aforesaid action releases the lock.

Covers to the binder may be employed or not as is desired, and may be attached in any desirable manner.

While I have described in detail a particular construction of a binder embodying my invention, VI do not wish to be confined in minor details to the particular construction described. My invention embodies the locking post alone, and any form of construction vof the other parts of the binder may be employed.

What I claim as my invention is In a binder, the combination with binding bars, and binding posts, of a locking post ccnsisting of telescoping sections attached respectively to said binding bars7 a shaft eX- tending through the length of the smaller of 5 said sections, and projecting with a threaded end beyond the outer face of the binding bar to Which said smaller section is attached, a thumb nut itted t0 said threaded end, a head fitted to the inner end olE said shaft and lying IO Within the said larger section and in contact GEORGE A. SHOEMAKER.

Witnesses O. B. BARKER, Jr., I. M. Pniinson 

